package lib.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import lib.util.UserOperator;

import object.Admin;
import object.LibraryManager;
import object.Reader;
import object.User;

/**
 * Servlet implementation class LoginServlet
 */
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public LoginServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.setCharacterEncoding("UTF_8");
		response.setHeader("Content-type","text/xml;charset=UTF-8");
		User user = UserOperator.checkUser(
				request.getParameter("user_id"), 
				request.getParameter("passwd"));
		if (user == null) {
			response.sendRedirect("UserNotFound.html");
		}
		request.getSession().setAttribute("user", user);
		if (user instanceof Reader) {
			response.sendRedirect("Reader.jsp");
		}
		if (user instanceof Admin) {
			;
		}
		if (user instanceof LibraryManager) {
			response.sendRedirect("LibraryManager.jsp");
		}
	}

}
